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Finding the Fourth Proportional to 159,017.65, 219,444.83 and 87,405.01

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Solution

The fourth proportional to 159,017.65, 219,444.83 and 87,405.01 is: 120,619.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,017.65 : 219,444.83 = 87,405.01 : x
  2. Step 2: Convert to fraction form
    159,017.65/219,444.83 = 87,405.01/x
  3. Step 3: Cross multiply
    159,017.65x = 219,444.83 × 87,405.01
  4. Step 4: Simplify right side
    159,017.65x = 19,180,576,902.73
  5. Step 5: Solve for x
    x = 19,180,576,902.73/159,017.65
  6. Step 6: Final answer
    x = 120,619.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.